forms - Delphi: Make the window draggable from a component -

-

i have custom form (custom shape , transparency) no borders (borderstyle: bsnone). has background image, normal timage component. want form draggable timage. possible? i'm using lazarus 1.2.6 (fpc ver.: 2.6.4).

this custom form looks on empty desktop: image.

here cross-platform solution:

type tform1 = class(tform)     image1: timage;      procedure image1mousedown(sender: tobject; button: tmousebutton;       shift: tshiftstate; x, y: integer);     procedure image1mousemove(sender: tobject; shift: tshiftstate; x,       y: integer);     procedure image1mouseup(sender: tobject; button: tmousebutton;       shift: tshiftstate; x, y: integer);  var px, py: integer;      mouseisdown: boolean;  procedure tform1.image1mousedown(sender: tobject; button: tmousebutton;   shift: tshiftstate; x, y: integer); begin   if button = mbleft begin     mouseisdown := true;     px := x;     py := y;   end; end;   procedure tform1.image1mousemove(sender: tobject; shift: tshiftstate; x,   y: integer); begin   if mouseisdown begin     setbounds(form1.left + (x - px), form1.top + (y - py), form1.width, form1.height);   end; end;  procedure tform1.image1mouseup(sender: tobject; button: tmousebutton;   shift: tshiftstate; x, y: integer); begin   mouseisdown:=false; end;

dragging timage cause form dragged.


Comments

Post a Comment

Popular posts from this blog

python - pip install -U PySide error -

-
does know how avoid following error when running pip install -u pyside per official website instructions here: https://pypi.python.org/pypi/pyside/#installing-pyside-on-a-mac-os-x-system note have done brew install qt successfully. you using pip version 7.0.3, version 7.1.2 available. should consider upgrading via 'pip install --upgrade pip' command. collecting pyside using cached pyside-1.2.4.tar.gz installing collected packages: pyside running setup.py install pyside complete output command /applications/anaconda/bin/python -c "import setuptools, tokenize;__file__='/private/var/folders/dy/ttgqhqqx3g9bsbsnqnxsk2z80000gq/t/pip-build-cpxemt/pyside/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/dy/ttgqhqqx3g9bsbsnqnxsk2z80000gq/t/pip-0r7hri-record/install-record.txt --single-version-externally-managed --compile:
Read more

arrays - C++ error: a brace-enclosed initializer is not allowed here before ‘{’ token -

-
simple question: i'm trying initialize array within c++ class declaration: using namespace std; #include <string> class myclass{ public: string myarray[] = {"a","b","c"}; }; and i'm getting error: error: brace-enclosed initializer not allowed here before ‘{’ token no, without complied c++11 compiler, cannot initialize member array in declaration. have initialize array member in constructor. , don't use open array if know number of elements initialize array.
Read more

cytoscape.js - How to add nodes to Dagre layout with Cytoscape -

-
i trying add nodes dagre graph through cityscape.js. problem nodes not painted. code have: cy.add({ group: "nodes", data: { id:"n0",name:"n0",weight: 75 }, }); $.ajax(url).done(function(jsontree){ var newnodes=[]; for(var i=1;i<6;i++){ //var child = jsontree.result[i]; newnodes.push( { group: "nodes", data: { id: "n"+i, name:"n"+i}}, { group: "edges", data: { id: "e"+i, source: "n0", target: "n"+i } } ); } cy.add(newnodes); any ideas? have used loaded function reload graph not work. not know if have use specific function reload graph. thank in advance. you need add positions new nodes. cytoscape.js docs : it important note positions of newly added nodes must defined when calling cy.add(). nodes can not placed in graph without valid position — otherwise not displayed. yo
Read more